3M™ Flux Field Directional Material (FFDM) EM80KM
Product Description
3M™ Flux Field Directional Material (FFDM) EM80KM is a multi-layer construction consisting of primary inner soft
magnetic foil layer(s) with a top black film layer and an acrylic pressure sensitive adhesive (PSA) that provide many
special features.
Key Features
• High permeability magnetic foil
• Approximately 80,000 permeability maximum
• Thin overall construction
• Pressure sensitive acrylic tape for high adhesion
• Supplied on a removable liner for easy handling
• Custom sizes may also be available
3M FFDM EM80KM
Product Construction/Material Description
Note: The following technical information and data should be considered representative or typical only and should not be used for
specification purposes. Final product specifications and testing methods will be outlined in the products Certificate of Analysis
(COA) that is provided once the product is approved by 3M for general commercialization and development work is completed.
3M™ Flux Field Directional Material (FFDM) EM80KM
Property
EM80KM-0025-1
EM80KM-003-1
EM80KM-005-1
EM80KM-2D-
0045
EM80KM-2D-005
Black Film
Top Film
Black PET Film
Black PET Film
Black PET Film
Black PET Film
Black PET Film
Magnetic Foil
Layer
Type
Magnetic Layer
Soft Magnetic foil
Magnetic Layer
Soft Magnetic
foil
Magnetic Layer
Soft Magnetic
foil
Magnetic Layer
Soft Magnetic
foil
Magnetic Layer
Soft Magnetic foil
Adhesive
Acrylic Type
Adhesive Layer
Acrylic Type
Adhesive Layer
Acrylic Type
Adhesive Layer
Acrylic Type
Adhesive Layer
Acrylic Type
Adhesive Layer
Total thickness
0.026 mm total
0.031 mm total
0.050 mm
0.047 mm total
0.052 mm total
Liner / Clear
PET
0.050 mm
0.050 mm
0.036 mm
0.050 mm
0.050 mm
Black Top Film
Magnetic Foil
PET Film Release
Liner
Adhesive layer
3M™ Flux Field Directional Material (FFDM) EM80KM
Applications
• Shield DC and low frequency magnetic field
• Wireless power system power transfer efficiency improvement
• Potential devices include mobile phone, computers, tablets, measurement and sensors
• Protect magnetic flux sensitive device such as a hall sensor and a flux gate from external low frequency
magnetic fields
• Assembly of magnet coil for Wireless Charging System
• Electronic equipment protection for automobile applications
Application Techniques
3M™ Flux Field Directional Material (FFDM) EM80KM is a magnetic material designed to interact and influence an
Electro-Magnetic (EM) field. The EM field could be generated for various reasons and in many applications it is desired
to focus the EM field across a specific volumetric area, such as a secondary EM field pick-up coil or antenna. 3M FFDM
EM80KM is designed to efficiently couple to the EM field and redirect and focus the field as desired in a given
application.
The product’s performance is based on several application considerations:
1) Permeability of the 3M FFDM material at the frequency range or frequency peak of the intended application
can affect the performance. Permeability of the 3M FFDM material varies with frequency and is a measure of
how well the EM material may couple with the EM field and impact performance.
2) Thickness of the 3M FFDM product. Multiple thickness options can be designed and can be used to optimize
an applications performance.
3) End use application orientation and location affects the 3M EM products interaction with an EM field.
Typical Physical Properties and Performance Characteristics
Note: The following technical information and data should be considered representative or typical only and should not be used for
specification purposes. Final product specifications and testing methods will be outlined in the products Certificate of Analysis
(COA) that is provided once the product is approved by 3M for general commercialization and development work is completed.
3M™ Flux Field Directional Material (FFDM) EM80KM
Property
Methodb
Value
Electrical Resistivity (Ωm)
ASTM D267*
1.1 x 10-6
Maximum Permeability
3M Test Method**
80,000
Magnetic Flux Density (T)
VSM***
Maximum 1.3 T
Temperature Range (°C)
-
-25~110
* Methods listed as ASTM are tested in accordance with the ASTM method noted
** / ***Permeability/Results of VSM can vary with test method and/or equipment used for testing at different test sites.
Storage and Shelf Life
The shelf life of 3M™ Flux Field Directional Material EM80KM is 12 months from the date of manufacture when stored
in the original packaging materials and stored at 21°C (70°F) and 50% relative humidity.
3M™ Flux Field Directional Material (FFDM) EM80KM
Certificate of Analysis (COA)
The 3M Certificate of Analysis (COA) for this product is established when the product is commercially available from
3M. The commercially available product will have a COA specification established. The COA contains the 3M
specifications and test methods for the products performance limits that the product will be supplied against. The 3M
product is supplied to 3M COA test specifications and the COA test methods. Contact your local 3M representative for
this product’s COA.
Final product specifications and testing methods will be outlined in the products Certificate of Analysis (COA) that is
shipped with the commercialized product.
Regulatory: For regulatory information about this product, contact your 3M representative.
Technical Information: The technical information, recommendations and other statements contained in this document are based
upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed.
Product Use: Many factors beyond 3M’s control and uniquely within user’s control can affect the use and performance of a 3M
product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is
solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user’s
method of application.
Warranty, Limited Remedy, and Disclaimer: Unless an additional warranty is specifically stated on the applicable 3M product
packaging or product literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time 3M
ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR
ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OR TRADE. If the
3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M
product or refund of the purchase price.
Limitation of Liability: Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product,
whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract,
negligence or strict liability.
Electronics Materials Solutions Division
3M Center, Building 224-3N-11
St. Paul, MN 55144-1000
1-800-251-8634 phone
651-778-4244 fax
www.3M.com/electronics
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